ACL-8216
High Resolution Multi-Function DAS Card
16-bit High Resolution A/D Conversion !!

Description

The ACL-8216 is a low-cost, high resolution (16-bit) multi-function data acquisition card for ISA bus PC AT or compatibles. Yhe heart of the ACL-8216 is 16-bit A/D converter which provides high accuracy at low cost. It is suitable for high precision monitoring system in industrial applications.

This card provides 16 single-ended or 8 differential analog channels of 16-bit resolution. An instrumentation amplifier with software programmable gain can be configured for votage gains of 1, 2, 4, and 8.The A/D conversion can be triggered by three ways: software trigger, internal timer pacer, and external trigger. The transfer of converted data can also be accomplished in three ways: software polling, interrupt(through ISR), and DMA. All modes can be selected by software.

To reduce RFI and EMI noise assure accuracy on sensitive analog inputs. Analog circuitry is powered from an on-board DC-to-DC converter that provides high noise isolation from the power of computer system.

Two channels of multiplying 12-bit double-buffered analog outputs are provided on the ACL-8216. An on-board -5 V internal reference voltage is used to provide analog output in the range 0~5 V. With an external AC to DC reference, it can generate outputs 0~5 V or 0~10 V.

There are 16 digital inputs and 16 digital outputs allowing the ACL-8216 to interface to variety of digital signals through two 20-pin dual-in-line connector.

A 3-channel programmable interval timer (8253 or 8254) on-board provides timing for the A/D or can be used to generate frequency outputs at any rate from 2MHz to 0.00046Hz.

 

Features

  • 8 differential or 16 single-ended analog inputs
  • 16-bit resolution
  • Programmable gains of 1, 2, 4, 8
  • Up to 67 KHz sample rate through DMA operation
  • Two channels 12-bit analog output
  • 16 TTL compatible digital inputs and outputs
  • A/D trigger modes: software, timer pacer, external trigger
  • A/D data transfer modes: polling, interrupt, DMA
  • Internal programmable timer pacer on-board
  • Only single +5V power supply required
  • 37-pin D-sub connector

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Specifications

  • I/O Base Address: 16 consecutive address location
  • Interrupts : IRQ3, ..., IRQ15
  • DMA Channels : 1 and 3

 

Analog Input (A/D)

  • Input Channel : 16 single-ended or 8 differential
  • Resolution : 16-bit
  • Coding : sign + magnitude (binary)
  • Input Range : (software controlled)
    Bipolar: ±10 V, ± 5 V, ±2.5 V, ±1.25 V
    Unipolar: 0~10 V, 0~5 V, 0~2.5 V, 0~1.25 V
  • Converter : B.B. ADS7805 or equivalent, successive approximation type
  • Conversion Time : 8 µsec
  • Overvoltage protection : continuous ±30 V maximum
  • System Accuracy : 0.003% of FSR ±1 LSB
  • Input Impedence : > 10 Mohm
  • Common Mode Rejection : 80 dB (Gain = 1)
  • Trigger Mode : software, pacer, and external trigger
  • Data transfer : program control, interrupt, and DMA
  • Data Throughput : 67 KHz (maximum)

 

Analog Output (D/A)

  • Output Channels : 2 double-buffered analog outputs
  • Resolution : 12-bit
  • Output Range : internal reference: 0~5 V or 0~10 V
  • External reference: max. +10 V or -10 V
  • Converter : B.B. DAC7541 or equivalent, monolithic multiplex
  • Settling Time : 30 µsec
  • Linearity : ±1/2 bit LSB
  • Output Driving : ±5 mA max.

 

Digital I/O (DIO)

  • Channel : 16 TTL compatible inputs and outputs
  • Input Voltage :
    Low: min. 0 V; Max. 0.8 V
    High:Min. +2.0 V
  • Input Load :
    Low: +0.5 V @ -0.2 mA max.
    High:+2.7 V @ +20 mA max.
  • Output Voltage :
    Low: Min 0 V; Max. 0.4 V
    High: Min. +2.4 V
  • Driving Capacity:
    Low : Max. +0.5 V @ 8.0 mA (Sink)
    High : Min. 2.7V @ 0.4 mA (Source)

 

Programmable Counter

  • Device : 8253/8254
  • A/D pacer : 32-bit timer ( two 16-bit counter cascaded together)
    with a 2 MHz time base
  • Counter : one 16-bit counter with a 2 MHz time base
  • Pacer Output : 0.00046 ~ 0.5 MHz

 

General Specifications

  • Connector : 37-pin female D-type connector
  • Operating Temperature : 0 degree C ~ 50 degrees C
  • Storage Temperature : -20 degrees C ~ 80 degrees C
  • Humidity : 5~95%, non-condensing
  • Power Consumption : +5V @ 960 mA maximum
  • Dimensions : 6.25"(160mm)(L) x 4.85"(124mm)(W)

 

Physical/Environment

  • Connector : 37-pin female D-type connector
  • Operating temp : 0 ~ 50ºC
  • Storage temp : -20 ~ 80ºC
  • Humidity : 5~95%, non-condensing
  • Power consumption : +5 V @ 960 mA max.
  • Dimensions: 160 (L) x 124 (W) mm

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Ordering Information

ACL-8216 : High Resolution Multifunction DAS Card

ACL-DASK : Data Acquisition Software Kit

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